LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P1441: EVAP System Flow During Non-Purge >> Diagnostic Procedures

Diagnostic Procedures

  1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under DIAGNOSTIC SYSTEM CHECKS. After performing powertrain diagnostic system check, go to next step.
  2. Using scan tool, recheck for DTCs. If DTCs P0443, P0449, P0452 or P0453 is also set, diagnose affected DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If DTCs P0443, P0449, P0452 or P0453 is not set, go to next step.
  3. Remove fuel filler cap. Using scan tool, monitor the Fuel Tank Pressure (FTP) sensor. If scan tool indicates FTP sensor is at -0.5 to 0.5 in. H2O, go to next step. If scan tool does not indicate that FTP sensor is at -0.5 to 0.5 H2O, go to DTC P0453: FUEL TANK PRESSURE SENSOR CIRCUIT HIGH VOLTAGE .
  4. Disconnect purge pipe from EVAP canister purge valve. Install a hand-held vacuum gauge to EVAP canister purge valve purge port. Disconnect EVAP canister purge valve connector. Monitor vacuum on vacuum gauge. Start and operate engine at idle. Increase idle to 1200-1500 RPM. If vacuum gauge indicates an increase in vacuum, go to next step. If vacuum gauge does not indicate an increase in vacuum, see DIAGNOSTIC AIDS .
  5. Replace EVAP canister purge valve. After replacing canister purge valve, go to next step.
  6. Monitor FTP sensor on scan tool. Start and operate engine at idle for 3 seconds. If scan tool indicates that fuel tank pressure is -0.5 to 0.5 in. H2O, go to next step. If scan tool does not indicate that fuel tank pressure is -0.5 to 0.5 in. H2O, go to step  3.
  7. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no undiagnosed DTCs are displayed, system is okay.
scientia non olet · About LEMON Manuals